Estes LTV Scout, Build, Part 8, 2nd Stage Adapter Insulation

A build comment: 

I have two LTV’s from way back. One is retired, the other is restored and flies great! I would recommend extending the engine tube past the blow mold adapter below the “Italia” decals. The ejection charge blew apart the adapter on both models. Especially if you sand down the seams, they get very thin. I also use two parachutes for recovery. It’s a beautiful model. 

Good luck! Ken Caldwell

I was also concerned about the hot ejection passing through a blow molded adapter. Hard plastic could probably take it, but blow molded (with some thin areas) maybe not.

Ken suggested extending the length of the BT-20 motor mount tube from the mount through the adapter. I decided on insulating the interior of the adapter.   

I cut a piece of scrap BT-60 about 1/2" longer than the adapter.

Even though I had already widened the hole to 5/8" diameter for the ejection gasses to pass through - 

I cut off more of the adapter end for the tapered tube I was going to install. I did leave some of the turned under shoulder lip.

The BT-60 tube was cut down its length with scissors.

An overlapping cone was formed and slid into the adapter. The overlap was marked with pencil.

An overlap tab was drawn, then cut for an overlap.

The insulating tube "cone" was pressed into the adapter to a tight fit  against the top and bottom openings.

Gluing and trimming in next step.